How's Demi Lovato celebrating her 4/20? By recalling her experimental youth — and wishing her pals Miley Cyrus and Joe Jonas a very happy holiday!

"In honor of our former escapades, I thought you'd like this to remember your first blaze.. Happy #420 @joejonas. #disneyhighclassof09✌️?????," she hilariously captioned the pic, which features Demi and Miley smiling behind a very red-eyed Joe smoking a fake blunt.

In case you don't remember, the former Jonas Brothers star admitted in December 2013 that his first time experimenting with marijuana happened with Demi and Miley during their Disney days.

"I must have been 17 or 18. They kept saying, 'Try it! Try it!' so I gave it a shot, and it was all right," he told 'New York Magazine.' "I don't even smoke weed that often anymore."

He and Demi might not partake in the weed smoking these days, but these 12 stars are very vocal about their love for the Mary J!